body {
    background-color: #1d1f21;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    color: white;
    overflow-x: hidden;
}

  
* {
    box-sizing: border-box;
}

.about-box {
    border-radius: 5px;
    background-color: rgb(29, 29, 29, .7);
    box-shadow: 0 0 5px rgb(29, 29, 29, .7);
    margin: auto;
    padding-top: 1vmin;
    padding-bottom: 1vmin;
    height: auto;
    width: 90%;
    text-align: center;
    border-bottom: 1px solid white;
    border-top: 1px solid white;
    font-size: 2vmin;
}

.portfolio-box {
    border-radius: 5px; 
    background-color: rgb(29, 29, 29, .7);
    box-shadow: 0 0 5px rgb(29, 29, 29, .7);
    margin: 20px 30px; 
    padding-top: 1vmin;
    padding-bottom: 1vmin;
    height: 65vmin;
    width: 55vmin;
    overflow-y: scroll;
    text-align: center;
    border-bottom: 1px solid white;
    border-top: 1px solid white;
    font-size: 2vmin;
}
  
.responsive {
    padding: 0 6px;
    float: left;
    width: 24.99999%;
    margin-bottom: 8px;
}
  
@media only screen and (max-width: 700px) {
.responsive {
    width: 49.99999%;
    margin: 6px 0;
}
}
  
@media only screen and (max-width: 500px) {
.responsive {
    width: 100%;
}
}