.main__acties{
    background-image: url('/img/man-wearing-black-and-white-stripe-shirt-looking-at-white-212286.jpg');
    height: 80vh;
    -webkit-background-size: 100%;
    background-size: 120%;
    background-position: 50% 50%;
}
.acties__filter{
    background-color: rgba(221, 0, 116, .45);
    height: 80vh;
}
.filter__article{
    width: 500px;
    height: 260px;
    background-color: rgba(0, 0, 0, .49);
    display: block;
    position: absolute;
    right: 0;
    margin: 120px 2.5% 0 0;
}
.article__title{
    font-size: 42px;
    margin: 1em 90px .5em 90px;
    color: #fff;
}
.article__text{
    color: #fff;
    margin: 0 90px 0px 90px;
    line-height: 1.5em;
    padding-bottom: 42px;
}
.main__grid{
    display: flex;
    width: 85%;
    justify-content: space-between;
    margin: 50px auto;
    flex-wrap: wrap;
}
.grid__element{
    width: 30%;
    height: 100%;
    margin: 20px 0;
    -webkit-background-size: 100%;
    background-size: 100%;
    background-repeat: no-repeat;
    background-position: 50% 50%;
}
.element__filter{
    transition: ease-in-out .2s;
    display: inline-block;
    position: relative;
    width: 100%;
    height: 100%;
}
#dummy {
    margin-top: 100%; /* 4:3 aspect ratio */
}
#element {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

#element:hover{
    background-color: rgba(221, 0, 116, .25);
    cursor: pointer;
}

.element__filter:hover{
    background-color: rgba(221, 0, 116, .25);
    cursor: pointer;
}

@media screen and (max-width: 1100px) {
    .main__acties{
        background-size: 140%;
    }
}
@media screen and (max-width: 870px) {
    .main__acties{
        background-size: 160%;
        background-position: 50% 20%;
    }
}
@media screen and (max-width: 750px){
    .main__acties {
        background-size: 200%;
        background-position: 50% 50%;
    }
    .filter__article{
        width: 100%;
        height: 30vh;
        flex-direction:  column;
        margin: 50vh 0 0 0;
    }
    .article__title{
        margin: 1.5em 7.5% .5em 7.5%;
    }
    .article__text{
        margin: 0 7.5% 0px 7.5%;
    }
    .main__grid{
        width: 98%;
    }
    .grid__element{
        width: 30%;
    }
}
@media screen and (max-width: 580px){
    .main__acties {
        background-size: 190%;
        height: 70vh;
    }
    .acties__filter {
        height: 70vh;
    }
    .filter__article {
        margin: 30vh 0 0 0;
        height: 40vh;
    }
}
@media screen and (max-width: 475px){

}