/* Approximates a 3:2 aspect ratio */
.flexthumb65 {
    position: relative;
    padding: 0 0 65% 0; /* Adjust bottom for desired height */
    height: 0px;
    overflow: hidden; 
}

.flexthumb65 a {
    display:block;
    position:absolute;
    left:0;
    top:0;
    bottom:0;
    right:0;
}

.flexthumb65 .img {
    display:block;
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background-position: center center;
    background-size: cover;
}

/* Approximates a 4:3 aspect ratio */
.flexthumb75 {
    position: relative;
    padding: 0 0 75% 0; /* Adjust bottom for desired height */
    height: 0;
    overflow: hidden; 
}

.flexthumb75 a {
    display:block;
    position:absolute;
    left:0;
    top:0;
    bottom:0;
    right:0;
}

.flexthumb75 .img {
    display:block;
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background-position: center center;
    background-size: cover;
}

/* Forces a 1:1 square aspect ratio */
.flexthumb100 {
    position: relative;
    padding: 0 0 100% 0; /* Adjust bottom for desired height */
    height: 0;
    overflow: hidden; 
}

.flexthumb100 a {
    display:block;
    position:absolute;
    left:0;
    top:0;
    bottom:0;
    right:0;
}

.flexthumb100 .img {
    display:block;
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background-position: center center;
    background-size: cover;
}