form{
    width:48%;
    margin-left:auto;
    margin-right:auto;
}
input[type=text], input[type=password]{
    width:100%;
    box-sizing:border-box;
    padding:0 .75em;
    height:2.507em;
    font-size:.97em;
    border:1px solid #ddd;
    margin-top:5px;
    border-radius:4px;
}
input[type=text]:focus-visible, input[type=password]:focus-visible{
    outline:none;
}
input[type=submit]{
    display:block;
    margin-left:auto;
    margin-right:auto;
    background-color:#bb0000;
    color:#fff;
    border:none;
    font-size:.97em;
    letter-spacing:.03em;
    font-weight:bolder;
    line-height:2.4em;
    padding:0 1.2em;
}
input[type=submit]:hover{
    cursor:pointer;
}
.error-info{
    border: 1px solid;
    padding: 10px;
    border-radius: 5px;
}

@media only screen and (max-width: 600px){
    form{
        width:100%;
    }
}