style.css

@import 'https://fonts.googleapis.com/css?family=Poiret+One';

html, body {
    min-height: 100vh;
}

#weather-box {
    background-color: rgba(200, 200, 200, 0.75);
    padding: 0 18px 0 18px !important;
    margin: auto;
    height: 430px;
    max-width: 830px;
    min-width: 255px;
}

.header {
    padding-top: 0.4em;
    padding-bottom: 0.3em;
    font-size: 2.5em;
    font-weight: bold;
    font-family: 'Poiret One', cursive;
}

.temp-btn {
    border-top-right-radius: 0 !important;
    border-bottom-right-radius: 0 !important;
}

body {
    display: flex;
    flex-direction: column;
    padding-top: 1.1em;;
    background-image: url('https://raw.githubusercontent.com/AbhishekChd/FreeCodeCampProjects/master/images/Weather-app-default-background.jpg');
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
}

.container-fluid {
    flex: 1 0 auto;
}

.footer {
    margin-top: 20px;
    flex-shrink: 0;
    padding: 20px 0 20px 0;
    color: #FFFFFF;
    background-color: rgba(34, 39, 39, 0.9);
    font-size: 1.15em;
}

.well {
    font-size: 1.14em;
    font-weight: bold;
}

.fa-heart {
    color: red;
}