in the folder: resources > views > auth > login.blade.php
inside of <style> here </sytle> paste the following code:
body {
margin: 0;
font-family: Roboto,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";
font-size: .9rem;
font-weight: 400;
line-height: 1.5385;
color: #ffffff;
text-align: left;
background: url(https://i.ibb.co/9bfgLgp/a.png);
}
.form-control {
display: block;
width: 100%;
height: calc(1.5385em + .875rem + 2px);
padding: .4375rem .875rem;
font-size: .8125rem;
font-weight: 400;
line-height: 1.5385;
color: #000000;
background-color: #7c24d6;
background-clip: padding-box;
border: 1px solid #7c24d6;
border-radius: 25px;
box-shadow: 0 0 0 0 transparent;
transition: border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}
.btn-primary {
color: #fff;
background: linear-gradient(to left, #7c24d6, #5d15a6);
border-radius: 25px;
}
.btn-registerBtn {
background: linear-gradient(to left, #ffffff59, #ffffff59);
color: #5d15a6;
border-radius: 25px;
box-shadow: 0 1px 6px 1px rgb(0 0 0 / 5%);
transition: 0.2s linear all !important;
}
.card .content-divider>span, .tab-content-bordered .content-divider>span {
background-color: #996bc7;
}
.card {
position: relative;
display: -ms-flexbox;
display: flex;
-ms-flex-direction: column;
flex-direction: column;
min-width: 0;
word-wrap: break-word;
background-color: #996bc7;
background-clip: border-box;
border: 1px solid rgba(0,0,0,.125);
border-radius: 25px;
}
.card-body {
-ms-flex: 1 1 auto;
flex: 1 1 auto;
padding: 3.0rem;
}
.text-muted {
color: #fff!important;
}