html {
    background-color: #333232;
    height: 100%;
}

h1 {
    color: white;
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
}

#container {
    height: 200px;
    width: 550px;
    background-color: #F5E4C3;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    grid-template-rows: 1fr 50px 1fr;
    margin: 0 auto;
    border: 5px solid #88B169;
}

#input {    
    height: 25px;
    width: 250px;
    grid-column-start: 2;
    grid-column-end: 4;
    justify-self: center;
    align-self: center;
}

#meter {
    height: 25px;
    width: 125px;
    grid-column-start: 2;
    grid-column-end: 3;
    grid-row-start: 2;
    grid-row-end: 2;
    justify-self: center;
    align-self: center;
}
#feet {
    height: 25px;
    width: 125px;
    grid-column-start: 3;
    grid-column-end: 4;
    grid-row-start: 2;
    grid-row-end: 2;
    justify-self: center;
    align-self: center;
}

#output {
    height: 25px;
    width: 250px;
    grid-column-start: 2;
    grid-column-end: 4;
    grid-row-start: 3;
    grid-row-end: 3;
    justify-self: center;
    align-self: center;
}