.frame-paper {
    --frame-preview: url('../imgs/frames/paper.png');
    background-image: var(--frame-preview);
}
.frame-bronze {
    --frame-preview: url('../imgs/frames/bronze.png');
    background-image: var(--frame-preview);
}
.frame-gold {
    --frame-preview: url('../imgs/frames/gold.png');
    background-image: var(--frame-preview);
}
.frame-diamond {
    --frame-preview: url('../imgs/frames/diamond.png');
    background-image: var(--frame-preview);
}
.frame-carbon {
    --frame-preview: url('../imgs/frames/carbon.png');
    background-image: var(--frame-preview);
}
.frame-iron {
    --frame-preview: url('../imgs/frames/iron.png');
    background-image: var(--frame-preview);
}
.frame-lace {
    --frame-preview: url('../imgs/frames/lace.png');
    background-image: var(--frame-preview);
}
.frame-leather {
    --frame-preview: url('../imgs/frames/leather.png');
    background-image: var(--frame-preview);
}
.frame-silk {
    --frame-preview: url('../imgs/frames/silk.png');
    background-image: var(--frame-preview);
}
.frame-wood {
    --frame-preview: url('../imgs/frames/wood.png');
    background-image: var(--frame-preview);
}
.frame-wool {
    --frame-preview: url('../imgs/frames/wool.png');
    background-image: var(--frame-preview);
}
.frame-china {
    --frame-preview: url('../imgs/frames/china.png');
    background-image: var(--frame-preview);
}
.frame-platinum {
    --frame-preview: url('../imgs/frames/platinum.png');
    background-image: var(--frame-preview);
}
.frame-ruby {
    --frame-preview: url('../imgs/frames/ruby.png');
    background-image: var(--frame-preview);
}