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Nice half pixel border for focused inputs.

by nilloc

HAML

.line
.box.focused 
  height: 
  %span.input 20px   ⌄
  <!-- downarrow is just quick and dirty placeholder -->

SCSS

:root {
  --line-end-size: 20px;
  --line-width: 1px;
}

div {
  position: absolute;
  display: inline-block;
  top: 20px;
  left: 20px;
  box-sizing: border-box;
  font-family: helvetica;
  font-size: 10px;
}

.line {
  height: 1px;
  width: 200px;
  border-top: 1px solid #4A90E2;
  overflow: visible;
}

.line::before,
.line::after {
  content: " ";
  position: absolute;
  border-left: 1px solid #4A90E2;
  height: calc(var(--line-end-size) + var(--line-width));
  width: var(--line-width);
  top: cal(var(--line-end-size) / 2px);
  left: 0;
}

.line::after {
  left: unset;
  right: -1px;
}

.box {
  top: 21px;
  left: 50px;
  height: 20px;
  padding-top: 2px;
  padding-left: 4px;
  padding-right: 1px;

}

.focused {
  background-color: #4A90E2;
  border-radius: 3px;
  color: white;
  font-weight: bold;
  border: 0.5px solid white;
}

.input {
  background-color: white;
  color: hsla(0, 0%, 20%, 1);
  padding: 2px;
  padding-bottom: 3px;
  border: 0.5px solid #D8D8D8;
  /* box-shadow: 0 1px 1px 0 rgba(0,0%,0%,0.2); */
  border-radius: 2px;
}