@import url('https://fonts.googleapis.com/css?family=Montserrat:300,600&display=swap');
* {
    box-sizing: border-box;
}

body {
    font-family: 'Montserrat', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;
    background-color: seagreen;
    flex-direction: column;
}

div {
    position: absolute;
    bottom: 20px;
    background: transparent;
    padding: 10px 20px;
}

input {
    width: 50px;
    padding: 5px;
    font-size: 20px;
    background-color: seagreen;
    border: none;
}

input:focus {
    outline: none;
}