Either pass the code in your Bricks settings -> Custom Code -> CSS, or - if you already have a Code manager active: Set the css to for "logged in users only".
html {
margin-top: 0px !important;
}
#wpadminbar {
top: 4px;
margin: 0 5px 0 5px;
transition: all ease-in-out .2s;
height: 40px;
backdrop-filter: blur(2px) saturate(180%);
-webkit-backdrop-filter: blur(2px) saturate(180%);
background-color: rgba(17, 25, 40, 0.3);
border-radius: 20px;
border: 1px solid rgba(255, 255, 255, 0.125);
padding: 3px;
}
#wpadminbar:hover {
transition: all ease-in-out .1s;
background-color: rgba(17, 25, 40, 0.48);
backdrop-filter: blur(10px) saturate(180%);
-webkit-backdrop-filter: blur(10px) saturate(180%);
}
#wpadminbar ul:first-of-type li:first-of-type a {
border-radius: 15px 0 0 15px !important;
}
#wpadminbar ul:last-of-type input {
border-radius: 15px !important;
margin-right: 2px !important;
}