.portoflio_wrapper {
    height: 100%;
    position: relative;
    border: 0px solid green;
}

.portoflio_wrapper2 {
    margin: 0;
    position: absolute;
    top: 45%;
    left: 20%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    border: 0px solid white;
    opacity: 0.85;
}

.portoflio_wrapper2:hover {
    transition: 0.2s;
    opacity: 1;
    border: 3px solid white;
    backdrop-filter: blur(3px);
}

.portfolio_button {
    background-color: transparent;
    border-color: transparent;
    text-align: center;
    font-family: 'Montserrat', sans-serif;
    color: white;
    font-size: 42px;
    transition: all 0.5s;
    padding: 50px;
    width: 400px;
}

.portfolio_button:focus {
    border: none;
    outline: none;
}

.portfolio_button span {
    cursor: pointer;
    display: inline-block;
    position: relative;
    transition: 0.5s;
    font-size: 42px;
    opacity: 100%;
}

.portfolio_button:hover span {
    padding-right: 30px;
    opacity: 100%;
}

.portfolio_button span:after {
    content: '\00bb';
    font-size: 40px;
    display: block;
    position: absolute;
    opacity: 0;
    top: 0;
    right: -50px;
    transition: 0.5s;
}

.portfolio_button:hover span:after {
    opacity: 1;
    right: 0;
}

@media (max-width: 70em) {

    .portoflio_wrapper2 {
        opacity: 0.80;
        top: 50%;
        left: 50%;
        background-color: wheat;
       
    }
    .portfolio_button{
        color: black;
    }
}