* {
    box-sizing: border-box;
}

body.container{
    min-width: 100%;
    display:flex;
    flex-direction:column;

}

a:hover , button:hover{
    animation: pulse;
    animation-duration: 1s;
    animation-iteration-count: infinite;
}

div.about.container , div.certs.container , div.edu.container , div.contact.container{
    display:flex;
    flex-direction:row;
    flex-wrap: wrap;
}

footer{
    height: 200px;
}

/* Small devices (portrait tablets and large phones, 600px and up) */
@media only screen and (min-width: 370px) {

    div.about.container section , div.certs.container section , div.edu.container section , div.contact.container section{
        width: 100%;
        min-height:250px;
        border-bottom: 1px solid black;
    }
    
    div.about.container div.card{
        height:100%;
        overflow-y: auto;
    }
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 768px) {

div.about.container section , div.certs.container section , div.edu.container section , div.contact.container section{
    width: 50%;
    min-height:250px;
    border-bottom: 1px solid black;
}

div.about.container div.card{
    height:100%;
    overflow-y: auto;
}
}

/* Large devices (laptops/desktops, 992px and up) */
@media only screen and (min-width: 992px) {
  
    
}