JSFiddle - React, Tailwind, and code Playground

by mrnobody

HTML

<div class="user__contacts">
  <a href="#" class="user__contacts-link">
		Мои контакты
  </a>
  <div class="dropp__wrapp">
    <div class="user__info">
      <div class="dropp__cursor">
      </div>
      <p>
        Pechkin@com.net
      </p>
      <p>
        9320432080938764232
      </p>
      <p>
        Pechkin
      </p>
    </div>
  </div>
</div>

CSS

.user__contacts {
  display: inline-block;
  vertical-align: middle;
  position: relative;
  background: #efefef;
}

.user__contacts-link:hover+.dropp__wrapp {
  opacity: 1;
}

.user__contacts-link {
  display: inline-block;
  color: #000;
  text-decoration: none;
  cursor: pointer;
  position: relative;
}

.user__contacts-link:after {
  background-color: #CD5C5C;
  display: block;
  content: "";
  height: 2px;
  width: 0%;
  left: 50%;
  position: absolute;
  -webkit-transition: width .3s ease-in-out;
  -moz--transition: width .3s ease-in-out;
  transition: width .3s ease-in-out;
  -webkit-transform: translateX(-50%);
  -moz-transform: translateX(-50%);
  transform: translateX(-50%);
}

.user__contacts-link:hover {
  color: #CD5C5C;
}

.user__contacts-link:hover:after,
.user__contacts-link:focus:after {
  width: 100%;
}

.dropp__wrapp {
  display: inline-block;
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 999;
  opacity: 0;
  transition: opacity ease-in-out 1s;
}

.user__info {
  margin-top: 20px;
  display: block;
  position: relative;
  background: #fff;
  border: 1px solid grey;
  border-radius: 10px;
}

.user__info p {
  border-bottom: 1px solid grey;
  padding: 10px 50px;
  margin: 0;
  text-align: left;
  white-space: nowrap;
}

.dropp__cursor {
  display: block;
  position: absolute;
  bottom: 100%;
  left: 50%;
  width: 10px;
  height: 10px;
  border-left: 1px solid grey;
  border-top: 1px solid grey;
  background: #fff;
  /*Проблемный код*/
  /* transform: rotate(45deg); */
  transform: translate(-50%, -50%) rotate(45deg);
}