Notification alert message UI | HTML, CSS & JavaScript

<h2 class="title">1. Animated Success Alert</h2>

<div class="alert success">
            <span>✔ Payment Successful</span>
            <button>×</button>
          </div>

</div>

</div>
    </div>

<h2 class="title">2. Shaking Error Alert</h2>

<div class="alert error">
            <span>✖ Invalid Password</span>
            <button>×</button>
          </div>

</div>

</div>
    </div>

<h2 class="title">3. Blinking Warning Alert</h2>

<div class="alert warning">
            <span>⚠ Battery Low</span>
            <button>×</button>
          </div>

</div>

</div>
    </div>

<h2 class="title">4. Sliding Info Alert</h2>

<div class="alert info">
            <span>ℹ New Feature Added</span>
            <button>×</button>
          </div>

</div>

</div>
    </div>

<h2 class="title">5. Floating Glass Alert</h2>

<div class="glass-alert">
            ✨ Modern Glass Notification
          </div>

</div>

</div>
    </div>

<h2 class="title">6. Neon Glow Alert</h2>

<div class="neon-alert">
            ⚡ Server Connected
          </div>

</div>

</div>
    </div>

<h2 class="title">7. Toast Notification</h2>

<div class="toast">
            🔔 Message Sent Successfully
          </div>

</div>

</div>
    </div>

<h2 class="title">8. Animated Gradient Alert</h2>

<div class="gradient-alert">
            🚀 Premium Membership Activated
          </div>

</div>

</div>
    </div>

<h2 class="title">9. Top Sliding Alert</h2>

<div class="top-alert">
            📢 Website Maintenance Tonight
          </div>

</div>

</div>
    </div>

<h2 class="title">10. Animated Progress Alert</h2>

Uploading File...

</div>

</div>
    </div>

</div>

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:Arial,sans-serif;
}

body{
  background:#020617;
  color:white;
  padding:40px;
}

.container{
  max-width:1300px;
  margin:auto;
}

.section{
  margin-bottom:90px;
}

.title{
  font-size:34px;
  margin-bottom:30px;
  color:#38bdf8;
}

.wrapper{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:30px;
}

.preview,
.code{
  background:#0f172a;
  border-radius:24px;
  padding:30px;
  min-height:280px;
  overflow:hidden;
  position:relative;
  border:1px solid rgba(255,255,255,.08);
}

.preview{
  display:flex;
  align-items:center;
  justify-content:center;
}

.code pre{
  color:#22c55e;
  line-height:1.8;
  font-size:14px;
  white-space:pre-wrap;
}

/* COMMON ALERT */

.alert{
  width:340px;
  padding:18px 22px;
  border-radius:18px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  position:relative;
  overflow:hidden;
  animation:popup .6s ease;
}

.alert span{
  z-index:2;
}

.alert button{
  border:none;
  background:none;
  color:inherit;
  font-size:22px;
  cursor:pointer;
  z-index:2;
}

/* POPUP */

@keyframes popup{
  0%{
    opacity:0;
    transform:scale(.5);
  }
  100%{
    opacity:1;
    transform:scale(1);
  }
}

/* SUCCESS ALERT */

.success{
  background:#14532d;
  color:#dcfce7;
}

.success::before{
  content:"";
  position:absolute;
  inset:0;
  background:
  linear-gradient(
    90deg,
    transparent,
    rgba(255,255,255,.25),
    transparent
  );
  transform:translateX(-100%);
  animation:shine 3s infinite;
}

@keyframes shine{
  100%{
    transform:translateX(100%);
  }
}

/* ERROR ALERT */

.error{
  background:#7f1d1d;
  color:#fee2e2;
  animation:shake 1s infinite;
}

@keyframes shake{
  0%,100%{
    transform:translateX(0);
  }
  20%{
    transform:translateX(-8px);
  }
  40%{
    transform:translateX(8px);
  }
  60%{
    transform:translateX(-5px);
  }
  80%{
    transform:translateX(5px);
  }
}

/* WARNING ALERT */

.warning{
  background:#78350f;
  color:#fef9c3;
}

.warning::after{
  content:"";
  position:absolute;
  width:12px;
  height:12px;
  background:#facc15;
  border-radius:50%;
  right:18px;
  top:50%;
  transform:translateY(-50%);
  animation:blink 1s infinite;
}

@keyframes blink{
  50%{
    opacity:.2;
  }
}

/* INFO ALERT */

.info{
  background:#1e3a8a;
  color:#dbeafe;
}

.info::before{
  content:"";
  position:absolute;
  left:-100%;
  top:0;
  width:100%;
  height:100%;
  background:rgba(255,255,255,.1);
  transform:skewX(-30deg);
  animation:slide 2s infinite;
}

@keyframes slide{
  100%{
    left:120%;
  }
}

/* GLASS ALERT */

.glass-alert{
  width:340px;
  padding:24px;
  border-radius:24px;
  backdrop-filter:blur(18px);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 10px 40px rgba(0,0,0,.4);
  animation:float 3s ease-in-out infinite;
}

@keyframes float{
  50%{
    transform:translateY(-12px);
  }
}

/* NEON ALERT */

.neon-alert{
  width:340px;
  padding:22px;
  border-radius:18px;
  text-align:center;
  border:2px solid #00f7ff;
  color:#00f7ff;
  box-shadow:
    0 0 10px #00f7ff,
    0 0 20px #00f7ff,
    0 0 40px #00f7ff;
  animation:neon 1.5s infinite alternate;
}

@keyframes neon{
  100%{
    box-shadow:
      0 0 20px #00f7ff,
      0 0 40px #00f7ff,
      0 0 80px #00f7ff;
  }
}

/* TOAST ALERT */

.toast{
  background:#111827;
  padding:20px 28px;
  border-radius:16px;
  border-left:5px solid #22c55e;
  animation:toast 4s infinite;
}

@keyframes toast{
  0%{
    transform:translateX(400px);
    opacity:0;
  }
  10%,80%{
    transform:translateX(0);
    opacity:1;
  }
  100%{
    transform:translateX(400px);
    opacity:0;
  }
}

/* GRADIENT ALERT */

.gradient-alert{
  width:340px;
  padding:22px;
  border-radius:20px;
  text-align:center;
  background:
  linear-gradient(
    270deg,
    #6366f1,
    #ec4899,
    #06b6d4
  );
  background-size:600% 600%;
  animation:gradient 6s ease infinite;
}

@keyframes gradient{
  0%{
    background-position:0% 50%;
  }
  50%{
    background-position:100% 50%;
  }
  100%{
    background-position:0% 50%;
  }
}

/* TOP ALERT */

.top-alert{
  width:100%;
  padding:18px;
  border-radius:16px;
  background:#7c3aed;
  text-align:center;
  animation:topSlide 2s infinite;
}

@keyframes topSlide{
  0%{
    transform:translateY(-120%);
  }
  20%,80%{
    transform:translateY(0);
  }
  100%{
    transform:translateY(-120%);
  }
}

/* PROGRESS ALERT */

.progress-alert{
  width:340px;
  padding:22px;
  border-radius:18px;
  background:#111827;
}

.progress-track{
  width:100%;
  height:8px;
  background:#1e293b;
  border-radius:20px;
  overflow:hidden;
  margin-top:16px;
}

.progress-bar{
  height:100%;
  width:0%;
  border-radius:20px;
  background:
  linear-gradient(
    90deg,
    #22c55e,
    #4ade80
  );
  animation:loading 4s linear infinite;
}

@keyframes loading{
  100%{
    width:100%;
  }
}

/* RESPONSIVE */

@media(max-width:900px){

.wrapper{
    grid-template-columns:1fr;
  }

}

- Notification alert message UI

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