body>content {
    display: block;
    max-width: 840px;
    padding-left:  20px;
    padding-right: 20px;

    margin-left:  auto;
    margin-right: auto;

    margin-top: 40px;
    margin-bottom: 40px;
}

content-title {
    font-weight: 600;
    font-size: x-large;
    letter-spacing: 4px;
}

content-list {
    padding-top: 20px;

    display: flex;
    justify-content: space-between;
}

card {
    flex-grow: 1;
    max-width: 30%;
    display: block;

    border: 1px solid #cecece;
    transition-duration: 250ms;
    position: relative;
}
card:hover {
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}

card a {
    top: 0px;
    position: absolute;
    width: 100%;
    height: 100%;
}

card-image {
    display: block;
    background-color: rgb(156, 156, 156);
    height: 70px;

    padding-top: calc(100px - 35px);
    padding-bottom: calc(100px - 35px);
}
card-content * {
    display: block;
}
card-content {
    display: block;
    margin: 20px;
}
card-subtitle {
    font-size: large;
    font-weight: 500;
}
card-title {
    padding-top: 5px;
    font-size: larger;
    font-weight: 600;
}
card-text {
    padding-top: 20px;
    font-size: medium;
    font-weight: 300;
}