main{
    font-family: HanMufa, system-ui, sans-serif;
}

h1::after{
    content : '';
    width: 30%;
    height: 2px;
    background: black;
    display: block;
    transition: 0.5s;
}

h1:hover::after{
    width: 10%;
}

.head{
    display : block;
    margin-bottom: 1.3em;
}
.head *{
    margin : 0;
}
.head a{
    font-size: 1.2rem;
    text-decoration : none;
    transition-duration: 1s;
}

form  {
    display: table;
}
div {
    display: table-row;
}
label {
    display: table-cell;
    padding-right : 1em;
}
input {
    display: table-cell;
}

.head a:hover{
    text-decoration: underline;
}

button{
    margin-top: 0.5rem;
    margin-left: 0.15rem;
    width: 110%;
    height: 110%;
    font-size: 1.15rem;
}