* {
    margin: 0;
    padding: 0;
    font-family: 'Montserrat', sans-serif;
    font-size: 1.35rem;
}

main {
    display: flex;
}

section {
    width: 50vw;
    height: 100vh;
    padding: 1rem;
    color: #808;
    transition: width 500ms;
}

.faded {
    width: 10vw;
    opacity: 0.4;
    overflow: hidden;
}

.active {
    width: 90vw;
    opacity: 1;
}

h1 {
    margin: 1rem 0;
    line-height: 3rem;
    font-size: 200%;
}

label {
    font-weight: bolder;
    white-space: nowrap;
}

::placeholder { /* Chrome, Firefox, Opera, Safari 10.1+ */
  color: #d7d;
  opacity: 1; /* Firefox */
}

select {
    color: #808;
}

select:focus option:checked, option:focus {
    background: #808;
    color: #fff;
}

#en {
    flex-grow: 1;
    background: #808;
    color: #fff;
}

.row {
    display: block;
    margin-bottom: 2rem;
}

input, select {
    display: block;
    width: 100%;
}

span {
    padding: 0 0.3rem;
    background: #f8f;
}

header {
    margin: 1rem;
    color: #fff;
    background: #3a3;
    font-size: 200%;
    text-align: center;
    box-shadow: 5px 10px 8px #aaa;
    cursor: pointer;
}

header.error {
    background: #d22;
}

header + main {
    opacity: 0.1;
}