html {
    height: 100%;
}

body {
    margin: 0 auto;
    padding: 0;
    min-height: 100%;
    width: 100%;
    max-width: 780px;
    text-align: center;
    height: 100%;
}

.left {
    float: left;
}

.clearfix::after {
    display: block;
    content: "";
    clear: both;
}

.calculator-form {
    position: relative;
}

.calculatebutton {
    position: relative;
    top: 1px;
    font-size: 22px;
}

.amount, .amount input {
    font-size: 22px;
}

#vat {
    width: 8ch;
    text-align: center;
}

.form-group {
    margin-bottom: 6px;
    margin-top: 6px;
}

.padding {
    padding-left: 10px;
    padding-right: 10px;
}

.result-block {
    width: 19%;
    padding-right: 1%;
    float: left;
    margin-top: 15px;
    margin-bottom: 15px;
}

#formnds {
    background: #00baff; padding: 10px; font-weight: bold;
}

h1 {
    display: block;
    font-size: 2em;
    margin-block-start: 0.67em;
    margin-block-end: 0.67em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
    font-weight: bold;
}

@media only screen and (max-width: 600px) {
    h1 {
        font-size: 1.5em;
    }
}