style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}
body{
    height: 80vh;
    display: flex;
    background-color: #dbd8d8;
}
body > div{
    margin: auto;
}

.toast{
    display: flex;
    align-items: center;
    background-color: #fff;
    border-radius: 2px;
    padding: 20px 0;
    min-width: 400px;
    max-width: 450px;
    border-left: 4px solid;
    box-shadow: 0 5px 8px rgba(0, 0, 0, 0.08);
    transition: all linear 0.3s;
}
@keyframes slideInLeft {
    from {
      opacity: 0;
      transform: translateX(calc(100% + 32px));
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }
@keyframes fadeOut {
    to {
        opacity: 0;
    }
}
.toast + .toast{
    margin-top: 24px;
}
.toast__icon{
    font-size: 24px;
}
.toast__icon, .toast__close{
    padding: 0 16px;
}
.toast__body{
    flex-grow: 1;
}
.toast__title{
    font-size: 16px;
    font-weight: 600;
    color: #333;

}
.toast__msg{
    font-size: 14px;
    color: #888;
    margin-top: 4px;
    line-height: 1.3;
}
.toast__close{
    font-size: 20px;
    color: rgba(0, 0, 0, 0.3);
    transition: opacity 0.5s;
}
.toast__close:hover{
    opacity: 0.6;
}
.toast--success{
    border-color: #47d864;
}
.toast--success .toast__icon{
    color: #47d864;
}
.toast--warning{
    border-color: #ffc021;
}
.toast--warning .toast__icon{
    color: #ffc021;
}
.toast--error{
    border-color: #ff623d;
}
.toast--error .toast__icon{
    color: #ff623d;
}
#toast{
    position: fixed;
    top: 32px;
    right: 32px;
    z-index: 999999;
}
.btn{
    display: inline-block;
    text-decoration: none;
    background-color: transparent;
    border: none;
    outline: none;
    color: #fff;
    padding: 12px 48px;
    border-radius: 50px;
    cursor: pointer;
    transition: opacity 0.5s ease;
    min-width: 120px;
}
.btn:hover{
    opacity: 0.8;
}
.btn + .btn{
    margin-left: 16px;
}
.btn--success{
    background-color: #71be34;
}
.btn--warn{
    background-color: #ffb702;
}
.btn--danger{
    background-color: #ff623d;
}
.btn--sizel{
    padding: 16px 56px;
}