.flex-container {
    display: flex;
    flex-wrap: wrap;
}

.content-txt {
    max-width: 50%;
    padding: 25px;
    font-size: 15px;
    text-align: center;
    display: inline-block;
    font-family: 'Spartan', sans-serif;
    letter-spacing: 2px;
}

.flex-item {
    flex: 50%;
}