* {
    box-sizing: border-box;
}

body {
    font-family: "Source Sans Pro", sans-serif;
    margin: 0;
    background: #00c6ff; /* fallback for old browsers */
    background: -webkit-linear-gradient(
        to left,
        #0072ff,
        #00c6ff
    ); /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(
        to left,
        #0072ff,
        #00c6ff
    ); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}

button {
    cursor: pointer;
}

input:focus {
    outline: none;
    border: 3px solid #393e46;
}

/* Heading */

header {
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 100px 0 50px;
    font-size: 2rem;
}

.highlight {
    font-weight: 700;
}

header h1 {
    margin: 0 0 30px;
    font-weight: 300;
}

form {
    position: relative;
    width: 500px;
}

form input {
    border: 0;
    border-radius: 50px;
    font-size: 1.2rem;
    padding: 15px 30px;
    width: 100%;
    height: 50.4px;
    transition: all 0.2s ease-out;
}

form button {
    position: absolute;
    top: 1.2px;
    right: 0.8px;
    height: 48.4px;
    background-color: #393e46;
    border: 0;
    border-radius: 50px;
    color: #fff;
    font-size: 1.2rem;
    padding: 13px 28px;
    transition: all 0.3s ease-out;
}

form button:hover,
form button:focus {
    outline: none;
    background-color: hsl(217, 10%, 15%);
}

/* Body */

.btn {
    background-color: #00c6ff;
    font-family: inherit;
    border: 0;
    border-radius: 10px;
    padding: 7px 15px;
    transition: all 0.2s ease-out;
}

#back {
    height: 30px;
    margin: 19.92px 0;
}

.btn:focus,
.btn:hover {
    outline: none;
    color: #fff;
    background: hsl(193, 100%, 40%);
}

ul.songs {
    list-style-type: none;
    padding: 0;
}

ul.songs li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 10px 0;
}

.container {
    margin: 30px auto;
    max-width: 100%;
    width: 800px;
}

.container h2 {
    font-weight: 300;
}

.container p {
    text-align: center;
}

.centered {
    display: flex;
    justify-content: center;
}

.centered button {
    transform: scale(1.3);
    margin: 15px;
}

/* Results */

#result {
    display: grid;
    grid-template-columns: 1fr auto;
}

/* Responsive */

@media screen and (max-width: 400px) {
    header {
        font-size: 1rem;
    }
    /* Forms */
    form {
        width: 300px;
        font-size: 0.9rem;
    }
    form input {
        font-size: inherit;
        height: 42.8px;
        padding: 12px 28px;
    }
    form button {
        height: 40.8px;
        font-size: inherit;
        padding: 12px 28px;
    }
}