.cores label::after {
    content: '';
    display: block;

    border-radius: 50%;
    width: 50px;
    height: 50px;
}

label[for=verde]::after {
    background-color: #33CC66;
}
label[for=rosa]::after {
    background-color: #FF6666;
}
label[for=azul]::after {
    background-color: #6666FF;
}
.cores input:checked + label::after {
    border: 6px solid rgba(0,0,0,0.3);
}
.cores label::after {
    box-sizing: border-box;
}
.cores input[type=radio] {
    display: none;
}
.cores input:not(:checked) + label img {
    display: none;
}
.cores label::after {
    position: absolute;
    top: 30px;
}
.cores {
    position: relative;
    padding-top: 90px;
}
label[for=verde]::after {
    left: 0;
}
label[for=rosa]::after {
    left: 60px;
}
label[for=azul]::after {
    left: 120px;
}
.cores label img {
    display: block;
    max-width: 100%;
}
.produto {
    color: #333;
    line-height: 1.3;
    margin-top: 2em;
}
.produto h1 {
    font-size: 1.8em;
    font-weight: bold;
}
.produto p {
    font-size: 1.2em;
    font-style:italic;
    margin-bottom: 1em;
}
.produto legend {
    display: block;
    font: bold 0.9em/2.5 Arial;
    text-transform: uppercase;
}
.comprar {
    background: #91BD3C;
    border: none;
    color: #333;

    font-size: 1.4em;
    text-transform: uppercase;

    box-shadow: 0 1px 3px #777;

    display: block;
    padding: 0.5em 1em;
    margin: 1em 0;
}
.detalhes {
    padding: 2em 0;

}
.detalhes h2 {
    font-size: 1.5em;
    line-height: 2;
}
.detalhes p {
    margin: 1em 0;
    font-size: 1em;
    line-height: 1.5;
    max-width: 36em;
}
@media (min-width: 500px) {
    .detalhes {
        font-size: 1.2em;
    }
}
@media (min-width: 630px) {
    .produto {
        position: relative;
        padding-left: 40%;
        font-size: 1.2em;
    }
    .cores {
        position: static;
        padding: 0;
    }
    .cores legend {
        position: static;
    }
    .cores label img {
        position: absolute;
        top: 0;
        left: 0;
        max-width: 35%;
        max-height: 100%;
    }
    .cores label:after {
        position: static;

        float: left;
        margin-right: 10px;
    }
    fieldset {
        display: inline-block;
        vertical-align: top;

        margin: 1em 0;
        min-width: 240px;
        width: 45%;
    }
}
table {
    border-spacing: 0.2em;
    border-collapse: separate;

}
thead {
    background-color: #999;
}
thead th {
    font-weight: bold;
    padding: 0.3em 1em;
    text-align: center;
}
td {
    padding: 0.3em;
}
tr:nth-child(2n) {
    background-color: #CCC;

}
td:first-child {
    font-style: italic;
}
.tamanhos output {
    display: inline-block;
    height: 44px;
    width: 44px;
    line-height: 44px;
    text-align: center;

    border: 3px solid #666;
    border-radius: 50%;
    color: #555; 
}