styles.css

* {
    box-sizing: border-box;
}

img {
	display: block;
	width: 100%;
	height: auto;
}

figure {
    margin: 0;
}

p {
    margin: 0;
}

body {
    background: black;
    font-family: 'Open Sans', sans-serif;
    margin: 0;
}

.container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.post {
    width: 540px;
    height: 742px;
    margin: 20px 0 20px 0;
}

.post > .post-header {
    background-color: #ffffff;
    height: 73px;
    padding: 14px;

    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between;
    align-items: center;

    border-radius: 3px 3px 0 0;
}

.post > .post-header > .user-info {
    display: flex;
    flex-direction: row;
    align-items: center;
}

.post > .post-header > .user-info > .avatar {
    max-width: 45px;
    overflow: hidden;
    margin-right: 10px;
    border-radius: 50%;
}

.post > .post-header > .user-info > .name {
    display: flex;
    flex-flow: column
}

.post > .post-header > .user-info > .name span:first-child {
    font-weight: bold;
}

.post > .post-content > img {
    vertical-align: middle;
} 

.post > .post-actions {
    background: white;
    height: 69px;
    padding: 14px;
    font-size: 22px;

    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between;
    align-items: center;
}

.post > .post-actions > .reactions i {
    padding-right: 6px;
}

.post > .post-description {
    background: white;
    height: 194px;
    padding: 0px 14px 14px 14px;
    border-radius: 0 0 3px 3px;
}

.post > .post-description p:last-child {
    padding-top: 25px;
}