html,
body {
    height: 100vh;
}

.square {
    cursor: pointer;
    aspect-ratio: 1;
    background-color: #B7ADCF;
    border-radius: 10%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2em;
    color: white;
    transition: box-shadow 0.3s cubic-bezier(0.42, 0, 0.58, 1);
}

.container {

    height: 100%;
}

.container>.row {
    margin: 0;
}

.square:hover {
    -webkit-box-shadow: 0px 10px 19px 0px rgba(66, 68, 90, 1);
    -moz-box-shadow: 0px 10px 19px 0px rgba(66, 68, 90, 1);
    box-shadow: 0px 10px 19px 0px rgba(66, 68, 90, 1);
}

header {
        width: 100%;
        margin: 0;
}
header h1 {
    text-align: center;
    padding: 1em;
    background-color: #B7ADCF;
    height: 3em;
    width: 100%;
    margin: 0;
}

header h5 {
    text-align: center;
    padding: 1em;
    background-color: #9c92b3;
    height: 3em;
    width: 100%;
    margin: 0;
}

footer {
    text-align: center;
    padding: 0.5em;
    background-color: #B7ADCF;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;

    position: absolute;
    bottom: 0;
}


p {
    text-align: center;
    margin: 0;
    padding: 1em;
    width: 100%;
    background-color: hsl(219, 13%, 53%);
    font-size: 1em;
    color: white;

}