.main {
    height: 100px;
    width: 100px;
    position: relative;
}
.main::before, .main::after{
    background: #0aaaa0;
    border-radius: 5px;
    position: absolute;
    top: 50%;
    transform: translateX(-50%);
    content: '';
    width: 100px;
    height: 15px;
}
.main::before {
    transform: rotate(-45deg);
}
.main::after {
    transform: rotate(-135deg);
}

.wrap {
  display: flex;
  justify-content: center;
  margin: 40px auto 0;
}