html, body {
    height: 100%;
    margin: 0;
}

body {
    background-color: #2c88bb;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 100%;
    padding-left: 15px;
    padding-right: 15px;
}

.responsive-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: auto;
}