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CSSボタン チートシート

シンプルなボタン

.btn {
  background: #4f8cff;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 12px 32px;
  font-size: 1.1em;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
.btn:hover {
  background: #2563eb;
  transform: translateY(-2px) scale(1.04);
}

アウトラインボタン

.btn-outline {
  background: #fff;
  color: #4f8cff;
  border: 2px solid #4f8cff;
  border-radius: 6px;
  padding: 12px 32px;
  font-size: 1.1em;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-outline:hover {
  background: #4f8cff;
  color: #fff;
}

シャドウ付きボタン

.btn-shadow {
  background: #ff6ec4;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 12px 32px;
  font-size: 1.1em;
  box-shadow: 0 4px 16px #ff6ec488;
  cursor: pointer;
  transition: box-shadow 0.2s, background 0.2s;
}
.btn-shadow:hover {
  background: #ff3e9e;
  box-shadow: 0 8px 24px #ff6ec4aa;
}

グラデーションボタン

.btn-gradient {
  background: linear-gradient(90deg, #4f8cff, #ff6ec4);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 12px 32px;
  font-size: 1.1em;
  cursor: pointer;
  transition: opacity 0.2s;
}
.btn-gradient:hover {
  opacity: 0.8;
}

アイコン付きボタン

.btn-icon {
  background: #fff;
  color: #4f8cff;
  border: 2px solid #4f8cff;
  border-radius: 6px;
  padding: 12px 32px 12px 24px;
  font-size: 1.1em;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background 0.2s, color 0.2s;
}
.btn-icon:hover {
  background: #4f8cff;
  color: #fff;
}

丸型ボタン

.btn-round {
  background: #4f8cff;
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  font-size: 1.5em;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-round:hover {
  background: #2563eb;
}

レインボーボタン

.btn-rainbow {
  background: linear-gradient(90deg, #ff6ec4, #4f8cff, #6effc4, #ffe66e);
  color: #fff;
  border: none;
  border-radius: 24px;
  padding: 12px 36px;
  font-size: 1.1em;
  cursor: pointer;
  transition: filter 0.2s;
}
.btn-rainbow:hover {
  filter: brightness(1.2) saturate(1.4);
}

ネオンボタン

.btn-neon {
  background: #222;
  color: #fff;
  border: 2px solid #4f8cff;
  border-radius: 8px;
  padding: 12px 36px;
  font-size: 1.1em;
  box-shadow: 0 0 8px #4f8cff, 0 0 24px #ff6ec4;
  text-shadow: 0 0 8px #4f8cff, 0 0 24px #ff6ec4;
  cursor: pointer;
  transition: box-shadow 0.2s;
}
.btn-neon:hover {
  box-shadow: 0 0 32px #ff6ec4, 0 0 64px #4f8cff;
}

グラスボタン

.btn-glass {
  background: rgba(255,255,255,0.2);
  color: #4f8cff;
  border: 1.5px solid #4f8cff88;
  border-radius: 12px;
  padding: 12px 36px;
  font-size: 1.1em;
  backdrop-filter: blur(6px);
  box-shadow: 0 2px 12px #4f8cff22;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-glass:hover {
  background: rgba(79,140,255,0.15);
  color: #2563eb;
}

シャドウ浮きボタン

.btn-float {
  background: #fff;
  color: #4f8cff;
  border: none;
  border-radius: 8px;
  padding: 12px 36px;
  font-size: 1.1em;
  box-shadow: 0 4px 16px #4f8cff33;
  cursor: pointer;
  transition: box-shadow 0.2s, transform 0.2s;
}
.btn-float:hover {
  box-shadow: 0 8px 32px #4f8cff55;
  transform: translateY(-4px) scale(1.04);
}

スライドボタン

.btn-slide {
  background: #fff;
  color: #4f8cff;
  border: 2px solid #4f8cff;
  border-radius: 8px;
  padding: 12px 36px;
  font-size: 1.1em;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: color 0.2s;
}
.btn-slide span {
  position: relative;
  z-index: 2;
}
.btn-slide::before {
  content: '';
  position: absolute;
  left: -100%; top: 0;
  width: 100%; height: 100%;
  background: #4f8cff;
  z-index: 1;
  transition: left 0.3s;
}
.btn-slide:hover {
  color: #fff;
}
.btn-slide:hover::before {
  left: 0;
}

グラデーション枠ボタン

.btn-grad-outline {
  background: #fff;
  color: #4f8cff;
  border: 2px solid transparent;
  border-radius: 8px;
  padding: 12px 36px;
  font-size: 1.1em;
  background-image: linear-gradient(#fff, #fff), linear-gradient(90deg, #4f8cff, #ff6ec4);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.btn-grad-outline:hover {
  color: #ff6ec4;
  border-color: #ff6ec4;
}

ドットボタン

.btn-dot {
  background: #fff;
  color: #4f8cff;
  border: 2px dashed #4f8cff;
  border-radius: 50px;
  padding: 12px 36px;
  font-size: 1.1em;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-dot:hover {
  background: #4f8cff;
  color: #fff;
}

パルスボタン

.btn-pulse {
  background: #4f8cff;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px 36px;
  font-size: 1.1em;
  cursor: pointer;
  box-shadow: 0 0 0 0 #4f8cff88;
  animation: pulse 1.2s infinite;
  transition: box-shadow 0.2s;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 #4f8cff88; }
  70% { box-shadow: 0 0 0 16px #4f8cff00; }
  100% { box-shadow: 0 0 0 0 #4f8cff00; }
}

アイコンラウンドボタン

.btn-icon-round {
  background: #fff;
  color: #ff6ec4;
  border: 2px solid #ff6ec4;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  font-size: 1.5em;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-icon-round:hover {
  background: #ff6ec4;
  color: #fff;
}

グローイングボタン

.btn-glow {
  background: #4f8cff;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px 36px;
  font-size: 1.1em;
  cursor: pointer;
  box-shadow: 0 0 8px #4f8cff, 0 0 24px #ff6ec4;
  transition: box-shadow 0.2s;
}
.btn-glow:hover {
  box-shadow: 0 0 32px #ff6ec4, 0 0 64px #4f8cff;
}

3D押し込みボタン

.btn-3d {
  background: linear-gradient(180deg, #4f8cff 60%, #2563eb 100%);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 14px 38px;
  font-size: 1.1em;
  box-shadow: 0 6px 0 #2563eb, 0 8px 24px #4f8cff44;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.1s;
}
.btn-3d:active {
  transform: translateY(6px);
  box-shadow: 0 0px 0 #2563eb, 0 2px 8px #4f8cff44;
}

波紋エフェクトボタン

.btn-ripple {
  position: relative;
  overflow: hidden;
  background: #fff;
  color: #4f8cff;
  border: 2px solid #4f8cff;
  border-radius: 8px;
  padding: 12px 36px;
  font-size: 1.1em;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-ripple:hover {
  background: #4f8cff;
  color: #fff;
}
.btn-ripple .ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  animation: ripple 0.6s linear;
  background: rgba(79,140,255,0.4);
  pointer-events: none;
}
@keyframes ripple {
  to {
    transform: scale(3);
    opacity: 0;
  }
}

リボンボタン

.btn-ribbon {
  position: relative;
  background: #ff6ec4;
  color: #fff;
  border: none;
  border-radius: 8px 8px 8px 8px;
  padding: 12px 36px 12px 48px;
  font-size: 1.1em;
  cursor: pointer;
  overflow: visible;
}
.btn-ribbon .ribbon {
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 28px; height: 28px;
  background: #ffe66e;
  border-radius: 8px 0 0 8px;
  box-shadow: 0 2px 8px #ff6ec422;
}

タグ風ボタン

.btn-tag {
  background: #fff;
  color: #ff6ec4;
  border: 2px solid #ff6ec4;
  border-radius: 24px 24px 24px 4px;
  padding: 12px 36px 12px 28px;
  font-size: 1.1em;
  position: relative;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-tag::before {
  content: '';
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  width: 8px; height: 8px;
  background: #ff6ec4;
  border-radius: 50%;
}
.btn-tag:hover {
  background: #ff6ec4;
  color: #fff;
}

スイッチボタン

.switch {
  position: relative;
  display: inline-block;
  width: 54px;
  height: 30px;
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: #ccc;
  border-radius: 30px;
  transition: .3s;
}
.slider:before {
  position: absolute;
  content: "";
  height: 22px;
  width: 22px;
  left: 4px;
  bottom: 4px;
  background: #fff;
  border-radius: 50%;
  transition: .3s;
}
.switch input:checked + .slider {
  background: #4f8cff;
}
.switch input:checked + .slider:before {
  transform: translateX(24px);
}

バッジ付きボタン

.btn-badge {
  position: relative;
  background: #4f8cff;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px 36px;
  font-size: 1.1em;
  cursor: pointer;
}
.btn-badge .badge {
  position: absolute;
  top: 6px; right: 16px;
  background: #ff6ec4;
  color: #fff;
  border-radius: 50%;
  padding: 2px 8px;
  font-size: 0.9em;
  font-weight: bold;
  box-shadow: 0 2px 8px #ff6ec422;
}

トグルボタン

.btn-toggle {
  background: #fff;
  color: #4f8cff;
  border: 2px solid #4f8cff;
  border-radius: 8px;
  padding: 12px 36px;
  font-size: 1.1em;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-toggle.active {
  background: #4f8cff;
  color: #fff;
}

リフトアップボタン

.btn-lift {
  background: #fff;
  color: #4f8cff;
  border: 2px solid #4f8cff;
  border-radius: 8px;
  padding: 12px 36px;
  font-size: 1.1em;
  box-shadow: 0 2px 8px #4f8cff22;
  cursor: pointer;
  transition: box-shadow 0.2s, transform 0.2s;
}
.btn-lift:hover {
  box-shadow: 0 12px 32px #4f8cff44;
  transform: translateY(-8px) scale(1.06);
}

シャイン（光沢）ボタン

.btn-shine {
  position: relative;
  background: #4f8cff;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px 36px;
  font-size: 1.1em;
  overflow: hidden;
  cursor: pointer;
}
.btn-shine span {
  position: relative;
  z-index: 2;
}
.btn-shine::before {
  content: '';
  position: absolute;
  left: -60%;
  top: 0;
  width: 60%;
  height: 100%;
  background: linear-gradient(120deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0.7) 50%, rgba(255,255,255,0.2) 100%);
  transform: skewX(-20deg);
  z-index: 1;
  transition: left 0.5s;
}
.btn-shine:hover::before {
  left: 110%;
}

ステッカーボタン

.btn-sticker {
  background: #ffe66e;
  color: #ff6ec4;
  border: 2px dashed #ff6ec4;
  border-radius: 16px 4px 16px 4px;
  padding: 12px 36px;
  font-size: 1.1em;
  box-shadow: 0 2px 8px #ff6ec422;
  cursor: pointer;
  position: relative;
  transition: box-shadow 0.2s, transform 0.2s;
}
.btn-sticker:hover {
  box-shadow: 0 8px 24px #ff6ec488;
  transform: rotate(-2deg) scale(1.04);
}