.tab {
  display: inline-block;
  color: #444;
  background: #8c8c8c;
  cursor: pointer;
  vertical-align: middle;
  padding: 5px;
  text-align: center;
  border-top: 1px solid grey;
  border-left: 1px solid grey;
  border-right: 1px solid grey;
}
    
.active {
  background-color: white;
}


.widget-action-menu {
  padding: 4%;
}

.header {
  background-color: #d1d1d1;
}

.round-button {
  background-color: #4CAF50; 
  clip-path: polygon(0 53%, 100% 100%, 100% 0);
  position: relative;
  z-index: 1;
}