css - Calculate text height properly independently of font used to make a text element with a right arrow -


i'm trying create label has right arrow. looks this:

arrow example

the code i'm using following (less): 

@font-size: 14px; @padding-top: 4px; @arrow-bheight: @font-size;  .label {   position: relative;   font-size: @font-size;   font-weight: normal;   font-style: italic;   text-transform: uppercase;   padding: @padding-top 8px;   line-height: 1;    color: #fff;   background: #000;    &:after {     content: "";     width: 0;     height: 0;     border-top: @arrow-bheight solid transparent;     border-bottom: @arrow-bheight solid transparent;     border-left: @arrow-bheight solid #000;     position: absolute;     right: -@arrow-bheight;     top:0;   } }

my problem depending on font use, the arrow doesn't fit text font.

problem of arrows not fitting text

i've been trying set specific value line-height, e.g. line-height: @font-size, it's not working.

here's codepen of problem.

how can make right arrow have proper height regardless of font used?

there's no need define @padding-top variable separately. instead use em unit relative element's font-size.

also should change display type of labels inline-block:

updated example

.label {     display: inline-block;     font-size: @font-size; /* has been set 14px */     padding: 0.5em 8px;    /* computed value of 0.5em 14px/2 = 7px */     line-height: 1;     /* other declarations... omitted due brevity */ }

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