style.css

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@200;300;400;500;600;700&display=swap');
*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body{
  overflow: hidden;
  background: #f2f2f2;
}
.wrapper{
  position: absolute;
  top: 20px;
  left: 20px;
  animation: show_toast 1s ease forwards;
}
@keyframes show_toast {
  0%{
    transform: translateX(-100%);
  }
  40%{
    transform: translateX(10%);
  }
  80%, 100%{
    transform: translateX(20px);
  }
}
.wrapper.hide{
  animation: hide_toast 1s ease forwards;
}
@keyframes hide_toast {
  0%{
    transform: translateX(20px);
  }
  40%{
    transform: translateX(10%);
  }
  80%, 100%{
    opacity: 0;
    pointer-events: none;
    transform: translateX(-100%);
  }
}
@keyframes durtion_bar {
    0%{
        height: 95px;
    }
    10%{
        height: 85px;
    }
    20%{
        height: 75px;
    }
    30%{
        height: 65px;
    }
    40%{
        height: 55px;
    }
    50%{
        height: 45px;
    }
    60%{
        height: 35px;
    }
    70%{
        height: 25px;
    }
    80%{
        height: 15px;
    }
    90%{
        height: 5px;
    }
    100%{
        height: 0px;
    }
}
.wrapper .toast{
  background: #fff;
  padding: 0 30px 0 20px;
  box-shadow: 1px 7px 14px -5px rgba(0,0,0,0.15);
  width: 430px;
  height: 95px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.wrapper .toast.offline{
  border-color: #ccc;
}
.wrapper .duration-bar{
    width: 5px;
    height: 95px;
    animation: durtion_bar 6000ms ease-out forwards;
    background-color: #2ecc71;
    position: absolute;
    bottom: 0;
    left: 0;
}
.toast .content{
  display: flex;
  align-items: center;
}
.content .icon{
  font-size: 25px;
  color: #fff;
  height: 50px;
  width: 50px;
  text-align: center;
  line-height: 50px;
  border-radius: 50%;
  background: #2ecc71;
}
.toast.offline .content .icon{
  background: #ccc;
}
.content .details{
  margin-left: 15px;
}
.details span{
  font-size: 20px;
  font-weight: 500;
}
.details p{
  color: #878787;
}
.toast .close-icon{
  color: #878787;
  font-size: 23px;
  cursor: pointer;
  height: 40px;
  width: 40px;
  text-align: center;
  line-height: 40px;
  border-radius: 50%;
  background: #f2f2f2;
  transition: all 0.3s ease;
}
.close-icon:hover{
  background: #efefef;
}