@media screen and (min-width: 300px) {
    img.category  {
        min-height: 90px
    }
}

@media screen and (min-width: 768px) {
    img.category  {
        min-height: 168px
    }
}

@media screen and (min-width: 1024px) {
    img.category  {
        min-height: 147px
    }
}

@media screen and (min-width: 1400px) {
    img.category  {
        min-height: 160px
    }
}

@media screen and (min-width: 1920px) {
    img.category  {
        min-height: 117px
    }
}

img.avatar:not(#wpadminbar img) {
    min-height: 100px;
    height: auto;
}