:root{
    --cor-fundo: #696969;
    --gradiente1: blue;
    --gradiente2: gray;
}
html{
    border: 0;
    margin: 0;
    background-image: url(./home-bg.jpg);
    width: 100%;
    background-size : cover;  /* estica imagem */

}
h1{
    border: 10px solid;
    background-color: var(--cor-fundo);
    padding: 1%;
    text-align: right;
    border-radius: 10%;
    color: burlywood;
    font-size: 46px;
    background-image: url(https://images.unsplash.com/photo-1538370965046-79c0d6907d47?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxleHBsb3JlLWZlZWR8M3x8fGVufDB8fHx8&w=1000&q=80);
    font-family: fantasy, Tahoma, Geneva, Verdana, sans-serif;
    text-align: center;
    margin-top: -5%;
}
body{
    background-image: linear-gradient(120deg,var(--gradiente1) 30%, var(--gradiente2) 50%);
}
.box-form{
    display: block;
    background-color: aquamarine;
    position: absolute;
    left: 25%;
    top: 1%;
    border: 5px solid;
    padding: 5%;
    border-radius: 10%;
    box-shadow: 15px 25px 25px black;
    font-family: Helvetica, Arial,sans-serif;
}
#description{
    font-size: 20px;
    text-align: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin-bottom: 5%;
    margin-top: -20px;
}

.form{
    display:block;
    border: 0px solid white;
    padding: 3%;
    background-image: linear-gradient(240deg, var(--gradiente2) 20%, white 30%);
    padding-bottom: 15%;
    padding-top: 5%;
    padding-right: 0;
    padding-left: 8%;
    border-radius: 10%;
    box-shadow: 10px 5px 5px black;
    margin-top: 2%;
}

.form1, .form2{
    font-size: 1rem;
}
button, input{
    width: 60%;
    font-size: 30px;
}
#input1{
    width:50%;
}
select{     
    width: 30%;
    font-size: 30px;
    left: 10%;
}
#calcular{
    position:absolute;
    display:block;
    left: 20%;
    width: 60%;
    font-weight: bold;
    border-radius: 10%;
    background-color: #909090;
}
#resultado{
    color: rgb(23, 128, 19);
    background-color: rgba(208, 255, 0, 0.541);
    border: 5px solid;
    border-radius: 10%;
    width: 50%;
}

p{
    margin: 0;
}

table{
    margin: 0;
    align-items: auto;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background-image: repeating-linear-gradient(gray, white, gray) ;
    width: 100%;
    border-radius: 10%;    
}
td{
    border: 5px solid transparent;
}
.medida{
    font-weight: 700;
}

@media (max-width: 500px) {
    html{
        font-size: 8px !important;
    }
}