*{
    margin: 0;
    padding:0;
    box-sizing: border-box;
}

htmll{
    font-size: 62.5%;
}
body{
    font-family: Helvetica,Arial, sans-serif;
}
header{
    position: relative;
    background-color: #222222;
    color: #bababa;
    padding: 1rem;

    img{
        float: left;
        height: 3rem;
        width: auto;
        margin-right: 2rem;
    }

    h1{
        font-family: Arial, Helvetica, sans-serif;
        font-size: 2.5rem;
    }

    nav{
        position: absolute;
        top:5px;
        right: 5px;
        text-align: right;
        width: 50%;
        z-index: 1000;
        #menuBtn {
            display: inline-block;
            padding: 3px 10px;
            text-align: center;
            color: white;
            border: 1px solid white;
            border-radius: 7px;
        }
        ul{
            list-style-type: none;
            margin-left: 0;
            border: 1 px solid black;
            padding-top: 4px    ;
            li{
                display: block;
                background-color: rgba(#448344, 0.7);
                color: black;
                margin-left: 0;
                font-size: 1.2rem;
                padding: 2px 4px 2px 4px;
                text-align: center;
            }
        }

        a{
            text-decoration: none;
            color: black;
        }
    }
}

main{
    position: relative;
    padding: 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem;

    section{
        border: 1px solid black;
        padding: 0.4rem;
        height: 18rem;
        h2{
            font-size: 1.8rem;
            margin-bottom: 0.5rem;
        }
        

        h2{
            font-size: 1.4rem;
            margin-bottom: 0.3rem;
        }
        
        p{
            margin-bottom: 0.4rem;
        }

        ul{
            margin-left: 1rem;
        }

        legend {
            margin: 0.5rem;
            padding: 0 0.2rem
        }
    }

    #calc{
        border: 1px solid green;
        padding-left: 5px;
        padding-top: 5px;
        padding-bottom: 5px;
        
        input[type='number']{
            margin: 0.3rem;
        }
        button{
            margin: 0.2rem 0.4rem;
            padding: 0.2rem 0.4rem;
        }

        output {
            padding: 4px;
            border: 1px solid black;
        }
    }

    table {
        border-collapse: collapse;
        tr {
            td{
                border: 1px solid black;
                padding: 4px;
            }
        }
    }
}

footer{
    background-color: #222222;
    color: #bababa;
    padding: 1rem;
}