placeholder

скрываем красиво

/* плавное изменение прозрачности  placeholder-а при фокусе */
.input1::-webkit-input-placeholder       {opacity: 1; transition: opacity 0.3s ease;}
.input1::-moz-placeholder                {opacity: 1; transition: opacity 0.3s ease;}
.input1:-moz-placeholder                 {opacity: 1; transition: opacity 0.3s ease;}
.input1:-ms-input-placeholder            {opacity: 1; transition: opacity 0.3s ease;}
.input1:focus::-webkit-input-placeholder {opacity: 0; transition: opacity 0.3s ease;}
.input1:focus::-moz-placeholder          {opacity: 0; transition: opacity 0.3s ease;}
.input1:focus:-moz-placeholder           {opacity: 0; transition: opacity 0.3s ease;}
.input1:focus:-ms-input-placeholder      {opacity: 0; transition: opacity 0.3s ease;}
/* сдвиг placeholder-а вправо при фокусе*/
.input2::-webkit-input-placeholder       {text-indent: 0px;   transition: text-indent 0.3s ease;}
.input2::-moz-placeholder                {text-indent: 0px;   transition: text-indent 0.3s ease;}
.input2:-moz-placeholder                 {text-indent: 0px;   transition: text-indent 0.3s ease;}
.input2:-ms-input-placeholder            {text-indent: 0px;   transition: text-indent 0.3s ease;}
.input2:focus::-webkit-input-placeholder {text-indent: 500px; transition: text-indent 0.3s ease;}
.input2:focus::-moz-placeholder          {text-indent: 500px; transition: text-indent 0.3s ease;}
.input2:focus:-moz-placeholder           {text-indent: 500px; transition: text-indent 0.3s ease;}
.input2:focus:-ms-input-placeholder      {text-indent: 500px; transition: text-indent 0.3s ease;}
/* сдвиг placeholder-а вниз при фокусе*/
.input3::-webkit-input-placeholder       {line-height: 20px;  transition: line-height 0.5s ease;}
.input3::-moz-placeholder                {line-height: 20px;  transition: line-height 0.5s ease;}
.input3:-moz-placeholder                 {line-height: 20px;  transition: line-height 0.5s ease;}
.input3:-ms-input-placeholder            {line-height: 20px;  transition: line-height 0.5s ease;}
.input3:focus::-webkit-input-placeholder {line-height: 100px; transition: line-height 0.5s ease;}
.input3:focus::-moz-placeholder          {line-height: 100px; transition: line-height 0.5s ease;}
.input3:focus:-moz-placeholder           {line-height: 100px; transition: line-height 0.5s ease;}
.input3:focus:-ms-input-placeholder      {line-height: 100px; transition: line-height 0.5s ease;}

скрываем при фокусе

:focus::-webkit-input-placeholder {color: transparent}
:focus::-moz-placeholder          {color: transparent}
:focus:-moz-placeholder           {color: transparent}
:focus:-ms-input-placeholder      {color: transparent}

цвет

::-webkit-input-placeholder {color:#c0392b;}
::-moz-placeholder          {color:#c0392b;}/* Firefox 19+ */
:-moz-placeholder           {color:#c0392b;}/* Firefox 18- */
:-ms-input-placeholder      {color:#c0392b;}