Измените цвет границы ввода при выборе
input:focus {
outline: none;
border: 1px solid red;
}
Lioruby
input:focus {
outline: none;
border: 1px solid red;
} var getColor = prompt("Choose your color ", "Enter the color ");
var color;
var el = document.getElementById("color");
el.innerHTML = "Whatever paragraph message.";
if (getColor =="Yellow" || getColor =="yellow" || getColor =="YELLOW"){
color = "#FFFF66";
el.style.borderColor = color;
}
.borders{
background-color:#00ffff;
border-color:#000000;
border-width:2px;
border-style:solid;
}document.getElementById("fName").className = document.getElementById("fName").className + " error"; // this adds the error class
document.getElementById("fName").className = document.getElementById("fName").className.replace(" error", ""); // this removes the error class