styles.css

.block_customprefs .customprefs_optionselectblock {
display:inline;
}

.block_customprefs .customprefs_optionselectform {
display:inline;
}

.block_customprefs .customprefs_optionselectopener,
.block_customprefs .customprefs_courseselectopener
{
display:inline;
margin-right:10px;
border: 1px solid #8f959e;
padding:6px 2px 6px 10px;
border-radius:0.3rem;
}

.block_customprefs .customprefs_optionselectblock,
.block_customprefs .customprefs_courseselectblock {
display:none;
margin-top:20px;
}

.block_customprefs .customprefs_courseselectform {
display:inline;
}

.block_customprefs .customprefs_optionselectform label,
.block_customprefs .customprefs_courseselectform label {
margin:0px 25px 0px 2px; 
}

.block_customprefs .expanded-icon .fa-chevron-down::before {
font-size:70%;
vertical-align:middle;
}