image color css

.custom-2 {
  filter:  brightness(0) invert(1);
}

/* use a black image */

/* change image color to white */
filter: invert(100%) sepia(16%) saturate(7463%) hue-rotate(222deg) brightness(119%) contrast(115%);

/* change image color to red */
filter: invert(16%) sepia(99%) saturate(7404%) hue-rotate(4deg) brightness(95%) contrast(118%);

/* change image color to green */
filter: invert(26%) sepia(89%) saturate(1583%) hue-rotate(95deg) brightness(96%) contrast(106%);

/* change image color to blue */
filter: invert(10%) sepia(90%) saturate(5268%) hue-rotate(245deg) brightness(109%) contrast(155%);

img{
filter: opacity(0.4) drop-shadow(0 0 0 red); 
}

header {
    height: 600px;
    width: 100vw;
    background: black;
    overflow: hidden;
    background: #C33764;  /* fallback colour. Make sure this is just one solid colour. */
    background: -webkit-linear-gradient(rgba(29, 38, 113, 0.8), rgba(195, 55, 100, 0.8)), url("https://bit.ly/2rlzaXi");
    background: linear-gradient(rgba(29, 38, 113, 0.8), rgba(195, 55, 100, 0.8)), url("https://bit.ly/2rlzaXi"); /* The least supported option. */
}

img {
   object-fit: cover;
}