* {
  padding: 0px;
  margin: 0px;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  box-sizing: border-box;
}

html,
body {
  height: 100vh;
  width: 100%;
  font-size: 14px;
  color: #333;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

#title {
  position: fixed;
  height: 30px;
  top: 0;
  color: blueviolet;
}
#container {
  position: relative;
}

.moveanimation {
  animation: shake 0.2s;
  transform: translate3d(0, 0, 0);
}

.m-b-10 {
  margin-bottom: 10px;
}

.start__btn {
  padding: 3px 5px;
}
.start__btn--disable {
  pointer-events: none;
  opacity: 0.5;
}

.flex {
  display: flex;
}

.justify-spacebetween {
  justify-content: space-between;
}
.box {
  display: flex;
  width: auto;
  border: 1px solid #ccc;
}

.box__item {
  height: 100px;
  width: 100px;
  border-right: 1px solid #ccc;
  cursor: pointer;
  background-color: #eceaec;
}

.box__item--highlight {
  background-color: #2a5acf;
}

.box__item--highlightwrong {
  background-color: #ff0000;
}

@keyframes shake {
  0% {
    transform: translateX(0);
  }
  10%,
  30%,
  50%,
  70%,
  90% {
    transform: translateX(-8px);
  }
  20%,
  40%,
  60%,
  80%,
  100% {
    transform: translateX(8px);
  }
}