Answers for "infinite left to right animation"

css animation left to right

//css code
#leftToRight{
  animation: run ease 3s;
  -webkit-animation: run ease 3s;
  -moz-animation: run ease 3s;
  -o-animation: run ease 3s;
  -ms-animation: run ease 3s;
}   

@keyframes run {
  0% { margin-left: -98%;}
  100%{ margin-left: 0%;}
}

@-moz-keyframes run {
  0% { margin-left: -98%;}
  100%{ margin-left: 0%;}
}

@-webkit-keyframes run {
  0% { margin-left: -98%;}
  100%{ margin-left: 0%;}
}

@-o-keyframes run {
  0% { margin-left: -98%;}
  100%{ margin-left: 0%;}
}

@-ms-keyframes run {
  0% { margin-left: -98%;}
  100%{ margin-left: 0%;}
}

//html code
<div id="leftToRight"></div>

webkit animation

@-webkit-keyframes pulse {
 0% {
   background-color: red;
   opacity: 1.0;
   -webkit-transform: scale(1.0) rotate(0deg);
 }
 33% {
   background-color: blue;
   opacity: 0.75;
   -webkit-transform: scale(1.1) rotate(-5deg);
 }
 67% {
   background-color: green;
   opacity: 0.5;
   -webkit-transform: scale(1.1) rotate(5deg);
 }
 100% {
   background-color: red;
   opacity: 1.0;
   -webkit-transform: scale(1.0) rotate(0deg);
 }
}

.pulsedbox {
 -webkit-animation-name: pulse;
 -webkit-animation-duration: 4s;
 -webkit-animation-direction: alternate;
 -webkit-animation-timing-function: ease-in-out;
}