* {
    box-sizing: border-box;
    font-family: Verdana, serif;
    color: #424242;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100vh;
    max-width: 120%;
}

body {
    background-color: #F5F5F5;
}

main {
    padding: 1.5rem;
    margin: auto;
    background-color: #EEEEEE;
    min-height: 100%;
    overflow: hidden;
}

h1 {
    margin-bottom: .5em;
}

table.life {
    margin:-1.5rem;
    table-layout: fixed;
}

td.week{
    margin:3px;
    width:12px;
    height: calc(100vw/52 - 2px);
    padding:0;
    border: 1px solid #424242;
}

table.config{
    border-collapse: collapse;
}

table.config td{
    padding:.2em;
}

table.config td button{
    width:100%;
}

@media only screen and (min-width: 768px) {
    main {
        max-width: 48rem;
        overflow: visible;
    }
    table.life{
        margin: auto;
    }
    td.week{
        height: 12px;
    }
}

.select-color {
    width:100px;
    color: white;
}

.select-color option {
    color: white;
}

.tooltip {
    position: relative;
}

.tooltip .tooltiptext {
    visibility: hidden;
    background-color: #424242;
    padding: 5px;
    text-align: left;
    font-size: .5em;
    border-radius: 0 6px 6px 6px;
    position: absolute;
    z-index: 1;
    top: -5px;
    left: 105%;
    top: 105%;
    opacity: 0;
    display: table;
    width: fit-content; 
    transition: opacity .5s;
    white-space: nowrap;
    color: #fff;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}