iportal/demo/components/menu-icon/template.html

web-portal

<style>
:host {
  width: 15px;
}

#m {
  margin: 0;
  width: inherit;
  position: relative;
  display: inline-block;
  -webkit-transform: rotate(0deg);
  -moz-transform: rotate(0deg);
  -o-transform: rotate(0deg);
  transform: rotate(0deg);
  -webkit-transition: 0.5s ease-in-out;
  -moz-transition: 0.5s ease-in-out;
  -o-transition: 0.5s ease-in-out;
  transition: 0.5s ease-in-out;
  cursor: var(--menu-button-cursor, default);
  transition: all 0.2s ease-in-out;
  -webkit-tap-highlight-color: transparent;
  --menu-button-color: #fff;
  opacity: 0.8;
}

/* this trick makes the height 75% of the width (4:3 ratio) */
#m:after {
  padding-top: 75%;
  display: block;
  content: "";
}

@media (hover: hover) {
  :host(:hover) {
    opacity: 0.75;
  }
}

#m span {
  display: block;
  position: absolute;
  height: 1px;
  width: 100%;
  background: var(--menu-button-color, #000000);
  border-radius: 0.5px;
  opacity: 1;
  left: 0;
  -webkit-transform: rotate(0deg);
  -moz-transform: rotate(0deg);
  -o-transform: rotate(0deg);
  transform: rotate(0deg);
  -webkit-transition: transform .1806s cubic-bezier(0.04, 0.04, 0.12, 0.96), -webkit-transform .1806s cubic-bezier(0.04, 0.04, 0.12, 0.96);
  -moz-transition: transform .1806s cubic-bezier(0.04, 0.04, 0.12, 0.96);
  -o-transition: transform .1806s cubic-bezier(0.04, 0.04, 0.12, 0.96);
  transition: transform .1806s cubic-bezier(0.04, 0.04, 0.12, 0.96);

}

#m span:nth-child(1) {
  top: 0%;
}

#m span:nth-child(2),
#m span:nth-child(3) {
  top: 40%;
}

#m span:nth-child(4) {
  top: 80%;
}

:host([open]) #m span:nth-child(1) {
  top: 40%;
  width: 0%;
  left: 50%;
}

:host([open]) #m span:nth-child(2) {
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
}

:host([open]) #m span:nth-child(3) {
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  -o-transform: rotate(-45deg);
  transform: rotate(-45deg);
}

:host([open]) #m span:nth-child(4) {
  top: 40%;
  width: 0%;
  left: 50%;
}
</style>

<div id='m'>
  <span></span>
  <span></span>
  <span></span>
  <span></span>
</div>