* {
  vertical-align: baseline;
  font-weight: inherit;
  font-family: inherit;
  font-style: inherit;
  font-size: 100%;
  border: 0 none;
  outline: 0;
  padding: 0;
  margin: 0;
}

body, html {
  position: fixed;
  font-size: 150%
}

/*
html, body {
    overscroll-behavior-y: contain;
}
*/

body {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

#plateau {
  position: relative;
  top: 0px;
  height: 963px;
}

.cache {
  position: relative;
  top: 447px;
  left: -2px;
  width: 186px;
  height: 60px;
  border: solid 5px;
  border-color: red;
  z-index: 1;
  pointer-events: none;
}

.languettes {
  position: relative;
  top: 381px;
  left: 2px;
  display: flex;
  flex-direction: row; 
}

.languette {
  display: flex;
  flex-direction: column; 
  justify-content: start;
  width: 50px;
  margin:5px;
  border: solid 1px;
}

.case {
  background-color: lightgrey;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 50px;
  height: 50px;
}

.case.active {
  background-color: yellow;
  font-size: 120%;
}

.languette {
  -webkit-user-select: none; /* Safari */
  -moz-user-select: none; /* Firefox */
  -ms-user-select: none; /* IE10+/Edge */
  user-select: none; /* Standard */
}

.languette.ui-draggable-dragging {
  box-shadow: 3px 3px 3px gray; 
}