body, html {
  margin: 0;
  padding: 0;
}

.simple-keyboard {
  font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
  width: 100%;
  user-select: none;
  box-sizing: border-box;
  overflow: hidden;
}

.simple-keyboard .hg-row {
  display: flex;
}

.simple-keyboard .hg-row:not(:last-child) {
  margin-bottom: 5px;
}

.simple-keyboard .hg-row .hg-button:not(:last-child) {
  margin-right: 5px;
}

.simple-keyboard .hg-button {
  display: inline-block;
  flex-grow: 1;
  cursor: pointer;
}

.simple-keyboard.hg-layout-default .hg-button.hg-standardBtn {
  max-width: 100px;
}

/**
 * hg-theme-default theme
 */
.simple-keyboard.hg-theme-default {
  background-color: rgba(0,0,0,0.2);
  padding: 5px;
  border-radius: 5px;
 }

.simple-keyboard.hg-theme-default .hg-button {
  box-shadow: 0px 0px 3px -1px rgba(0,0,0,0.3);
  height: 40px;
  border: 1px solid rgba(0,0,0,0.25);
  border-radius: 5px;
  box-sizing: border-box;
  padding: 5px;
  background: white;
  border-bottom: 1px solid gray;
 }

 .simple-keyboard.hg-theme-default .hg-button:active {
  background: #e4e4e4;
 }

.simple-keyboard.hg-theme-default.hg-layout-numeric .hg-button {
  width: 33.3%;
  height: 60px;
  align-items: center;
  display: flex;
  justify-content: center;
}