html, body {
    margin: 0;
    padding: 0;
}

body {
    background-color: white;
    font-family: 'New Courier', sans-serif;
    height: 100vh;
    text-align: center;
}

h1 {
    font-size: 20px;
}

.top, .bottom {
    padding: 5px;
}

.bottom {
    padding-top: 10px;
}

body:before {
    content: '';
    display: inline-block;
    height: 100%;
    vertical-align: middle;
}

button {
    outline: none;
    cursor: pointer;
}

.timer-length-controls {
    font-size: 20px;
    border:
}

.clock {
    background-color: #c9daf8;
    width: 250px;
    border-radius: 25px;
    text-align: center;
    display: inline-block;
    vertical-align: middle;
}

.time, #timer-label {
    font-family: 'New Courier', sans-serif;
    font-size: 30px;
}

.timer-lengths-controls {
    border-left: 1px solid #c9daf8;
    border-right: 1px solid #c9daf8;
    background: white;
    overflow: hidden;
    padding: 5px;
    transition: height .5s ease-out;
}

.timer-lengths-controls>div {
    display: flex;
    align-content: center;
}

.label {
    font-size: 18px;
    flex: 3;
    align-self: flex-start;
    text-align: left;
}

.length-buttons {
    display: flex;
    flex: 1;
    align-content: space-around;
}

.length-buttons>div {
    flex-grow: 1;
}

.length-buttons button {
    background: #c9daf8;
    color: black;
    border-radius: 5px;
    border: 1px solid #666666;
    width: 20px;
}

.time {
    margin: 0;
    font-family: 'Courier', sans-serif;
    font-weight: bold;
}

.timer {
    margin: 5px;
    padding: 5px;
}

.main-controls {
    display: flex;
    align-content: center;
}

.main-controls>div {
    flex: 1;
}

.main-btn {
    padding: 5px;
    width: 70px;
    font-size: 20px;
    border-radius: 10px;
    border: 1px solid black;
    color: black;
    background: #cfe2f3;
}

.main-btn:hover {
    background: #cccccc;
}