html body{
    height: 100%;
    width:100%;
}
body{
    padding: 10px;
}
h1 {
    front font-weight: 900;
    position: relative;

}
h1::after{content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    height: 3px;
    width: 0%;
    background-color: #e21010;
    transition: all ease 1s;
}
h1:hover::after{
    width: 100%;
}
h1{
    border-color: yellow;
    font-size: 20px;
    font-weight: 900;
    border-radius: 3px;
    padding: 12px 20px;
    margin: 50px;
    border: none;
    color: rgb(51, 8, 247);
    border-color: rgb(59, 32, 178);
   }
h1:hover{
    box-shadow: 5px 5px 0px #000;
}