Go download this:
https://github.com/google/material-design-icons/blob/96206ade0e8325ac4c4ce9d49dc4ef85241689e1/font/MaterialIcons-Regular.ttf?raw=true
Then see this:
Then test out this theme file:
slate:
card-mod-theme: slate
card-mod-root-yaml: |
.: |
mwc-icon-button[slot="trigger"]::after {
font-size: 22px;
height: 20px;
width: 200px;
margin-left: 0px;
margin-right: 0px;
content: "oldhere";
position: absolute !important;
top: 14px;
right: 0px;
}
mwc-icon-button[slot="trigger"]::before {
content: "done";
font-size: 22px;
height: 20px;
width: 200px;
margin-left: 0px;
margin-right: 25px;
position: absolute !important;
top: 14px;
right: 0px;
font-family: Material Icons;
}
Increase the last margin-right
if you need to.